Pros: Sound quality, Audeze customer support and more comfortable than expected!
Cons: Build quality and Value.
I am not a professional reviewer or anything so I'll just write a few words.
I originally had a HD650 which I sold to buy the Audeze LCD3. The LCD3 is by far the best sounding headphone I have ever heard. It sounds amazing.
I'm not happy with the build quality of the headphones. Considering that I paid $2000 I was expecting something built like a tank lolol but they are beautifully built!
In terms of value they are not worth $2000 unless you think it's worth paying that much for the amazing sound quality. I think it should cost no more than $1400 if you compare it to the LCD2.
In terms of comfort they are relatively comfortable but they get very uncomfortable if used for a long period of time, i.e. 3 hours +.
PS: Audeze customer support is by far the best, they even sent me a brand new $80 + shipping costs cable when I accidentally damaged my old cable.